Valve stem gas leak detector

Details Valve stem gas leak detector Valve stem gas leak detector

1995-06-06

1997-01-14

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73 405R, 7333505, 324691, 338 34, F16L 55168, G01W 111, F16K 4104

Patent

active

055941621

ABSTRACT:
A valve stem gas leak sensor or detector configured to surround a possibly leaking petrochemical or like flow line valve stem and provide for external monitoring equipment an electrical resistance related to the amount of hydrocarbon gas leakage occurring around the valve stem. Such a gas leak detector, termable a ring sensor, is configured as a stem surrounding enclosure, with interconnecting segments for ease of installation around and removability from a valve stem, with one or both of each such segments having an interiorly arranged layer of gas sensor particulate material characterized by change in electrical resistance in the presence of a changing concentration of hydrocarbon gas leakage around a valve stem, and with interengaging connector/conductor pins holding the segments together around the valve stem and across which the electrical resistance of one or both gas sensor material layers can be measured with the ring sensor in place on the valve stem.

REFERENCES:
patent: 3045198 (1962-07-01), Dolan et al.
patent: 4224585 (1980-09-01), Dolan
patent: 4237721 (1980-12-01), Dolan
patent: 4466273 (1984-08-01), Pillette
patent: 4517828 (1985-05-01), Miller et al.
patent: 4562725 (1986-01-01), Oka et al.
patent: 4573344 (1986-03-01), Ezekoye
patent: 4727749 (1988-03-01), Miller et al.
patent: 4737707 (1988-04-01), Mori et al.
patent: 4915816 (1990-04-01), Shakkottai et al.
patent: 4972867 (1990-11-01), Ruesch
patent: 5028906 (1991-07-01), Moriya et al.
patent: 5101657 (1992-04-01), Lahlouh et al.
patent: 5263682 (1993-11-01), Covert et al.
patent: 5309752 (1994-05-01), Beckinghausen, Jr. et al.
patent: 5348044 (1994-09-01), Eugene et al.
patent: 5457333 (1995-10-01), Fukui
Information folder on Brady Leak Tracker System, by Brady, Inc. of Milwaukee, WI, 1994.
Xomox Corporation information folder on Testing Valves for Emission Control, by Xomox Corporation of Cincinnati, OH, undated.
Information booklet on the Testo 350 Emissions Analyzer, by Testo Inc. of Flanders, NJ, undated.
Information booklet on the Century OVA 108 Portable Organic Vapor Analyzer, by The Foxboro Company, 1985.

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